SIMBAD references

2021A&A...656A..45M - Astronomy and Astrophysics, volume 656A, 45-45 (2021/12-1)

AGN feeding and feedback in Fornax A. Kinematical analysis of the multi-phase ISM.

MACCAGNI F.M., SERRA P., GASPARI M., KLEINER D., MOROKUMA-MATSUI K., OOSTERLOO T.A., ONODERA M., KAMPHUIS P., LOI F., THORAT K., RAMATSOKU M., SMIRNOV O. and WHITE S.V.

Abstract (from CDS):

We present a multi-wavelength study of the gaseous medium surrounding the nearby active galactic nucleus (AGN), Fornax A. Using MeerKAT, ALMA, and MUSE observations, we reveal a complex distribution of the atomic (HI), molecular (CO), and ionised gas in its centre and along the radio jets. By studying the multi-scale kinematics of the multi-phase gas, we reveal the presence of concurrent AGN feeding and feedback phenomena. Several clouds and an extended 3 kpc filament - perpendicular to the radio jets and the inner disk (r ≤ 4.5 kpc) - show highly-turbulent kinematics, which likely induces non-linear condensation and subsequent chaotic cold accretion (CCA) onto the AGN.In the wake of the radio jets and in an external (r ≥ 4.5 kpc) ring, we identify an entrained massive (∼107 M) multi-phase outflow (vOUT ∼ 2000 km s–1). The rapid flickering of the nuclear activity of Fornax A (∼3 Myr) and the gas experiencing turbulent condensation raining onto the AGN provide quantitative evidence that a recurrent, tight feeding and feedback cycle may be self-regulating the activity of Fornax A, in agreement with CCA simulations. To date, this is one of the most in-depth probes of such a mechanism, paving the way to apply these precise diagnostics to a larger sample of nearby AGN hosts and their multi-phase inter stellar medium.

Abstract Copyright: © ESO 2021

Journal keyword(s): galaxies: individual: Fornax A - galaxies: individual: NGC 1316 - galaxies: active - galaxies: kinematics and dynamics - galaxies: ISM - accretion - accretion disks

VizieR on-line data: <Available at CDS (J/A+A/656/A45): list.dat fits/*>

Simbad objects: 10

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